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Electric seat fore/aft adjustment nonfunctional

Topic number LI91.10-P-054143

Version 3

Design group 91.10 Front seats

Date 07-10-2013

Validity Model series 204, 207, 212 and 218 with fully electric se-at adjustment

Reason for change Added 204.0 and 204.9

Reason for block

Complaint:1. Noises when operating electric seat fore/aft adjustment2. Electric fore/aft adjustment nonfunctional3. Adjustment is biased to one side, which bends the seat frame

Cause:1. Frictional vibrations along fore/aft adjustment shaft2. Motor detached owing to mechanical damage to electric motor retaining plate caused by the customer3. One side of the seat adjustment drive shaft has come out

Remedy:For models 204.3, 207, 212 and 218 the adjustment motor, shafts and electric motor retaining plate can be replaced:(Contents of parts kit, see Pic12)1. Move seat to forwardmost position2. Remove seat cushion as per work instructions (Note: you do not have to cut the pnuematic lines as indicated inwork instructions (see Pic10) - take care not to pinch or kink the lines!)3. Detach plastic rails used to mount control unit (Pic1)4. Disconnect electric motor plug contact5. Remove bolts T40 securing electric motor retaining plate (Pic2)6. Push out electric motor upward (Pic3)7. Remove electric motor8. Pull shafts out of rails using pliers   Important: To ensure the parallelism of the two rails, do not twist the shafts and do not push against the rails mecha-nically.9. Remove electric motor retaining plate10. Position new electric motor retaining plate and screw in new bolts by a few threads11. Insert shafts all the way into rails      Important: Do not turn the shafts by hand.  If the electric motor or one of the shafts has become detached as a result of the damage, it is essential to check and, if necessary, to restore the parallelism.

  To do so, compare the longitudinal position of the rear edge of the respective rail using a measuring tape (Pic11) and adjust by turning the inserted shaft12. Attach rubber mounts to new electric motor13. Attach electric motor to short shaft first (Pic4)     Note: The electrical connection must always point upward.14. Attach rubber cap to long shaft and insert long shaft at electric motor

 

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15. Secure shaft and electric motor on retaining plate (Pic5-7)16. Tighten bolts securing electric motor retaining plate to 25Nm17. Assemble remaining components in reverse orderFor model 204.0 and 204.9 the entire seat frame must be replaced and seat motor should be reinforced:The customer should be made aware that adjusting the seat with items underneath it can and will damage the seat.Replace affected seat frame (follow WIS document AR91.10-P-1450CW). To prevent this issue from occurring again,use a cable tie to secure the fore/aft motor to mounting bracket on both the new seat frame, as well as the other seatframe (as illustrated in the attached picture motor_reinforce.jpg).AttachmentsFile DesignationPic1.jpg Unclip plastic railsPic2.jpg Bolts securing electric motor retaining platePic3.jpg Remove electric motorPic4.jpg Attach electric motor to short shaftPic5.jpg Clip in shaftPic6.jpg Clip in electric motorPic7.jpg Clip in shaftPic11.JPG Check parallelismPic10.jpg Seat cushion without removing pnuematic linesmotor_reinforce.jpg cable tie reinforcement

SymptomsBody / Seat / Seat noises / WhirringBody / Seat / Seat adjustment / Stiff/sluggishBody / Seat / Seat adjustment / Does not adjust aftBody / Seat / Seat adjustment / Does not adjust foreBody / Seat / Seat adjustment / NoiseBody / Seat / Seat adjustment / Function error

PartsPart number ES1 ES2 Designation Quantity Note EPC Other

ma-kepart

A0009107802 Parts kit - fore/aft adjustment 1 Left, with memory XA0009107902 Parts kit - fore/aft adjustment 1 Right, with memory XA 004 997 98 90 cable tie 2 Model 204.0 and 204.9 repairs

onlyX

A 204 910 75 36 Left seat adjuster 1 Model 204.0 and 204.9 withcode 275

X

A 204 910 76 36 Right seat adjuster 1 Model 204.0 and 204.9 withcode 242

X

AttachmentsFile Designation

 

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SDC12198.JPG Content of parts kit

Work unitsOp. no. Operation text Time Damage

codeNote

91A1M 36 Left front seat electric seat fore/aftadjustment shaft

91N1M 36 Right front seat electric seat fore/aftadjustment shaft

WIS-ReferencesDocument number Title Note Allocationar91.10-p-3310cw Remove/install seat cushion Model series 207/212 RemedyAR91.10-P-1450CW Remove/install front seat

adjustment mechanismOnly for models 204.0 and204.9

Remedy

ValidityVehicle Engine Transmission207.302 * *207.303 * *207.322 * *207.323 * *207.347 * *207.348 * *207.355 * *207.356 * *207.357 * *207.359 * *207.372 * *207.373 * *207.388 * *207.402 * *207.403 * *207.422 * *207.423 * *207.447 * *207.448 * *207.455 * *207.456 * *207.457 * *207.459 * *207.472 * *

 

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207.473 * *212.002 * *212.003 * *212.005 * *212.020 * *212.021 * *212.023 * *212.024 * *212.025 * *212.041 * *212.047 * *212.048 * *212.052 * *212.053 * *212.054 * *212.055 * *212.056 * *212.057 * *212.059 * *212.072 * *212.073 * *212.074 * *212.077 * *212.080 * *212.082 * *212.087 * *212.088 * *212.089 * *212.090 * *212.091 * *212.093 * *212.095 * *212.098 * *212.147 * *212.148 * *212.154 * *212.202 * *212.203 * *212.205 * *212.220 * *212.221 * *212.223 * *212.224 * *

 

07-10-2013 5:41 PM DAFARLE© Copyright Daimler AG   Page 5/11

212.225 * *212.247 * *212.248 * *212.254 * *212.255 * *212.256 * *212.257 * *212.259 * *212.272 * *212.273 * *212.274 * *212.277 * *212.280 * *212.282 * *212.287 * *212.288 * *212.289 * *212.291 * *212.293 * *212.298 * *218.303 * *218.323 * *218.355 * *218.359 * *218.373 * *218.374 * *218.391 * *218.393 * *218.903 * *218.923 * *218.959 * *218.973 * *218.974 * *218.991 * *218.993 * *C (204) * *

Attachments

 

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Pic1.jpg:

Pic2.jpg:

 

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Pic11.JPG:

 

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SDC12198.JPG:

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motor_reinforce.jpg: